4. Be Conscientious & Thoughtful

Conscientiousness, or the state of being attentive, thoughtful and having a desire to follow-through or do a task well, is predictive of a number of very important positive elements in life. Conscientious people make better spouses and parents — but non-conscientious people have more sex partners. The former invest in quality, and it seems like the latter make up the difference in, well, volume.

Want to be the person she wants to settle down with? Make sure you're... you guessed it — conscientious. That’s marriage material, chaps. Via Mating Intelligence Unleashed: The Role of the Mind in Sex, Dating, and Love: Researchers reported that in a sample of 545 people, men (but not women) with low levels of agreeableness and conscientiousness tended to have a higher number of sexual partners. It has also been found cross-culturally, across 10 world regions, that low levels of agreeableness and conscientiousness are related to higher levels of sexual promiscuity and relationship infidelity, so there may be reproductive benefits to those on the low end of these traits.